diff --git a/README.md b/README.md
index 285cf234..f134134c 100644
--- a/README.md
+++ b/README.md
@@ -67,6 +67,8 @@ sudo apt install ninja-build
 
 * Enable web support in Flutter: https://flutter.dev/docs/get-started/web
 
+* Optionally edit the file `lib/app_config.dart`. If you e.g. only want to change the default homeserver, then only modify the `defaultHomeserver` key.
+
 * Build with:
 ```bash
 ./scripts/prepare-web.sh
@@ -75,11 +77,6 @@ flutter pub get
 flutter build web --release --verbose
 ```
 
-* Optionally configure by serving a `config.json` at the same path as fluffychat.
-  An example can be found at `config.sample.json`. None of these
-  values have to exist, the ones stated here are the default ones. If you e.g. only want
-  to change the default homeserver, then only modify the `default_homeserver` key.
-
 ### Desktop (Linux, Windows, macOS)
 
 * Enable Desktop support in Flutter: https://flutter.dev/desktop
diff --git a/assets/fluffychat-banner.png b/assets/banner.png
similarity index 100%
rename from assets/fluffychat-banner.png
rename to assets/banner.png
diff --git a/config.sample.json b/config.sample.json
deleted file mode 100644
index fad342e3..00000000
--- a/config.sample.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "application_name": "FluffyChat",
-  "default_homeserver": "matrix.tchncsde",
-  "privacy_url": "https://fluffychat.im/en/privacy.html",
-  "source_code_url": "https://gitlab.com/ChristianPauly/fluffychat-flutter",
-  "support_url": "https://gitlab.com/ChristianPauly/fluffychat-flutter/issues",
-  "sentry_dns": "https://8591d0d863b646feb4f3dda7e5dcab38@o256755.ingest.sentry.io/5243143",
-  "render_html": false,
-  "hide_redacted_events": false,
-  "hide_unknown_events": false
-}
diff --git a/lib/app_config.dart b/lib/app_config.dart
new file mode 100644
index 00000000..35f7c5fa
--- /dev/null
+++ b/lib/app_config.dart
@@ -0,0 +1,27 @@
+abstract class AppConfig {
+  static const String applicationName = 'FluffyChat';
+  static const String applicationWelcomeMessage = null;
+  static const String defaultHomeserver = 'matrix.org';
+  static String jitsiInstance = 'https://meet.jit.si/';
+  static const bool allowOtherHomeservers = true;
+  static const bool enableRegistration = true;
+  static const String privacyUrl = 'https://fluffychat.im/en/privacy.html';
+  static const String sourceCodeUrl =
+      'https://gitlab.com/ChristianPauly/fluffychat-flutter';
+  static const String supportUrl =
+      'https://gitlab.com/ChristianPauly/fluffychat-flutter/issues';
+  static const bool enableSentry = true;
+  static const String sentryDns =
+      'https://8591d0d863b646feb4f3dda7e5dcab38@o256755.ingest.sentry.io/5243143';
+  static bool renderHtml = false;
+  static bool hideRedactedEvents = false;
+  static bool hideUnknownEvents = false;
+  static const String inviteLinkPrefix = 'https://matrix.to/#/';
+  static const String pushNotificationsChannelId = 'fluffychat_push';
+  static const String pushNotificationsChannelName = 'FluffyChat push channel';
+  static const String pushNotificationsChannelDescription =
+      'Push notifications for FluffyChat';
+  static const String pushNotificationsAppId = 'chat.fluffy.fluffychat';
+  static const String pushNotificationsGatewayUrl = 'https://janian.de:7023/';
+  static const String pushNotificationsPusherFormat = 'event_id_only';
+}
diff --git a/lib/components/chat_settings_popup_menu.dart b/lib/components/chat_settings_popup_menu.dart
index 22d848a4..8b22fc77 100644
--- a/lib/components/chat_settings_popup_menu.dart
+++ b/lib/components/chat_settings_popup_menu.dart
@@ -9,6 +9,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
 import 'package:url_launcher/url_launcher.dart';
 
+import '../app_config.dart';
 import 'dialogs/simple_dialogs.dart';
 import 'matrix.dart';
 
@@ -33,7 +34,7 @@ class _ChatSettingsPopupMenuState extends State<ChatSettingsPopupMenu> {
 
   void startCallAction(BuildContext context) async {
     final url =
-        '${Matrix.of(context).jitsiInstance}${Uri.encodeComponent(widget.room.id.localpart)}';
+        '${AppConfig.jitsiInstance}${Uri.encodeComponent(widget.room.id.localpart)}';
     final success = await SimpleDialogs(context)
         .tryRequestWithLoadingDialog(widget.room.sendEvent({
       'msgtype': Matrix.callNamespace,
diff --git a/lib/components/matrix.dart b/lib/components/matrix.dart
index cc0c6008..3eec6beb 100644
--- a/lib/components/matrix.dart
+++ b/lib/components/matrix.dart
@@ -1,6 +1,5 @@
 import 'dart:async';
 import 'dart:io';
-import 'dart:convert';
 
 import 'package:adaptive_dialog/adaptive_dialog.dart';
 import 'package:famedlysdk/encryption.dart';
@@ -17,9 +16,8 @@ import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
 import 'package:universal_html/prefer_universal/html.dart' as html;
 import 'package:url_launcher/url_launcher.dart';
-import 'package:path_provider/path_provider.dart';
 /*import 'package:fluffychat/views/chat.dart';
-import 'package:fluffychat/config/app_config.dart';
+import 'package:fluffychat/app_config.dart';
 import 'package:dbus/dbus.dart';
 import 'package:desktop_notifications/desktop_notifications.dart';*/
 
@@ -27,22 +25,16 @@ import '../utils/beautify_string_extension.dart';
 import '../utils/famedlysdk_store.dart';
 import 'dialogs/key_verification_dialog.dart';
 import '../utils/platform_infos.dart';
-import '../config/app_config.dart';
+import '../app_config.dart';
 import '../config/setting_keys.dart';
 import 'avatar.dart';
 
-import 'package:http/http.dart' as http;
-
 class Matrix extends StatefulWidget {
   static const String callNamespace = 'chat.fluffy.jitsi_call';
 
   final Widget child;
 
-  final String clientName;
-
-  final Store store;
-
-  Matrix({this.child, this.clientName, this.store, Key key}) : super(key: key);
+  Matrix({this.child, Key key}) : super(key: key);
 
   @override
   MatrixState createState() => MatrixState();
@@ -58,7 +50,7 @@ class Matrix extends StatefulWidget {
 
 class MatrixState extends State<Matrix> {
   Client client;
-  Store store;
+  Store store = Store();
   @override
   BuildContext context;
 
@@ -77,13 +69,12 @@ class MatrixState extends State<Matrix> {
 
   String activeRoomId;
   File wallpaper;
-
-  String jitsiInstance = 'https://meet.jit.si/';
+  String clientName;
 
   void clean() async {
     if (!kIsWeb) return;
 
-    await store.deleteItem(widget.clientName);
+    await store.deleteItem(clientName);
   }
 
   void _initWithStore() async {
@@ -96,7 +87,7 @@ class MatrixState extends State<Matrix> {
         if (PlatformInfos.isMobile) {
           await FirebaseController.setupFirebase(
             this,
-            widget.clientName,
+            clientName,
           );
         }
       }
@@ -284,38 +275,11 @@ class MatrixState extends State<Matrix> {
   void initState() {
     super.initState();
     initMatrix();
-    initConfig().then((_) => initSettings());
-  }
-
-  Future<void> initConfig() async {
-    if (PlatformInfos.isMobile) {
-      return;
-    }
-    try {
-      var configJsonString = '';
-      if (PlatformInfos.isWeb) {
-        configJsonString =
-            utf8.decode((await http.get('config.json')).bodyBytes);
-      } else if (PlatformInfos.isBetaDesktop) {
-        final appDocDir = await getApplicationSupportDirectory();
-        configJsonString =
-            await File('${appDocDir.path}/config.json').readAsString();
-      } else {
-        final appDocDir = await getApplicationDocumentsDirectory();
-        configJsonString =
-            await File('${appDocDir.path}/config.json').readAsString();
-      }
-      final configJson = json.decode(configJsonString);
-      AppConfig.loadFromJson(configJson);
-    } catch (error) {
-      debugPrint(
-          '[ConfigLoader] Failed to load config.json: ' + error.toString());
-    }
   }
 
   void initMatrix() {
-    store = widget.store ?? Store();
-
+    clientName =
+        '${AppConfig.applicationName} ${kIsWeb ? 'Web' : Platform.operatingSystem}';
     final Set verificationMethods = <KeyVerificationMethod>{
       KeyVerificationMethod.numbers
     };
@@ -324,7 +288,7 @@ class MatrixState extends State<Matrix> {
       verificationMethods.add(KeyVerificationMethod.emoji);
     }
     client = Client(
-      widget.clientName,
+      clientName,
       enableE2eeRecovery: true,
       verificationMethods: verificationMethods,
       importantStateEvents: <String>{
@@ -405,13 +369,13 @@ class MatrixState extends State<Matrix> {
             .listen(_showLocalNotification);
       });
     }
+    initSettings();
   }
 
   void initSettings() {
     if (store != null) {
-      store
-          .getItem(SettingKeys.jitsiInstance)
-          .then((final instance) => jitsiInstance = instance ?? jitsiInstance);
+      store.getItem(SettingKeys.jitsiInstance).then((final instance) =>
+          AppConfig.jitsiInstance = instance ?? AppConfig.jitsiInstance);
       store.getItem(SettingKeys.wallpaper).then((final path) async {
         if (path == null) return;
         final file = File(path);
diff --git a/lib/components/message_content.dart b/lib/components/message_content.dart
index 00a1b9fe..59e35df6 100644
--- a/lib/components/message_content.dart
+++ b/lib/components/message_content.dart
@@ -13,7 +13,7 @@ import 'package:matrix_link_text/link_text.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 import '../utils/url_launcher.dart';
-import '../config/app_config.dart';
+import '../app_config.dart';
 import 'html_message.dart';
 import 'matrix.dart';
 import 'message_download_content.dart';
diff --git a/lib/components/reply_content.dart b/lib/components/reply_content.dart
index bf3651eb..9af5bdb1 100644
--- a/lib/components/reply_content.dart
+++ b/lib/components/reply_content.dart
@@ -4,7 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
 
 import 'html_message.dart';
-import '../config/app_config.dart';
+import '../app_config.dart';
 
 class ReplyContent extends StatelessWidget {
   final Event replyEvent;
diff --git a/lib/config/app_config.dart b/lib/config/app_config.dart
deleted file mode 100644
index f948b741..00000000
--- a/lib/config/app_config.dart
+++ /dev/null
@@ -1,52 +0,0 @@
-abstract class AppConfig {
-  static String get applicationName => _applicationName;
-  static String _applicationName = 'FluffyChat';
-  static String get defaultHomeserver => _defaultHomeserver;
-  static String _defaultHomeserver = 'matrix-client.matrix.org';
-  static String get privacyUrl => _privacyUrl;
-  static String _privacyUrl = 'https://fluffychat.im/en/privacy.html';
-  static String get sourceCodeUrl => _sourceCodeUrl;
-  static String _sourceCodeUrl =
-      'https://gitlab.com/ChristianPauly/fluffychat-flutter';
-  static String get supportUrl => _supportUrl;
-  static String _supportUrl =
-      'https://gitlab.com/ChristianPauly/fluffychat-flutter/issues';
-  static String get sentryDsn => _sentryDsn;
-  static String _sentryDsn =
-      'https://8591d0d863b646feb4f3dda7e5dcab38@o256755.ingest.sentry.io/5243143';
-  // these settings can be re-set at runtime depending on what the in-app settings are
-  static bool renderHtml = false;
-  static bool hideRedactedEvents = false;
-  static bool hideUnknownEvents = false;
-  static String matrixToLinkPrefix = 'https://matrix.to/#/';
-
-  static void loadFromJson(Map<String, dynamic> json) {
-    if (json['application_name'] is String) {
-      _applicationName = json['application_name'];
-    }
-    if (json['default_homeserver'] is String) {
-      _defaultHomeserver = json['default_homeserver'];
-    }
-    if (json['privacy_url'] is String) {
-      _privacyUrl = json['privacy_url'];
-    }
-    if (json['source_code_url'] is String) {
-      _sourceCodeUrl = json['source_code_url'];
-    }
-    if (json['support_url'] is String) {
-      _supportUrl = json['support_url'];
-    }
-    if (json['sentry_dsn'] is String) {
-      _sentryDsn = json['sentry_dsn'];
-    }
-    if (json['render_html'] is bool) {
-      renderHtml = json['render_html'];
-    }
-    if (json['hide_redacted_events'] is bool) {
-      hideRedactedEvents = json['hide_redacted_events'];
-    }
-    if (json['hide_unknown_events'] is bool) {
-      hideUnknownEvents = json['hide_unknown_events'];
-    }
-  }
-}
diff --git a/lib/main.dart b/lib/main.dart
index 101ade15..a387fb85 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,5 +1,4 @@
 import 'dart:async';
-import 'dart:io';
 
 import 'package:famedlysdk/famedlysdk.dart';
 import 'package:fluffychat/utils/sentry_controller.dart';
@@ -13,9 +12,10 @@ import 'package:universal_html/prefer_universal/html.dart' as html;
 
 import 'components/matrix.dart';
 import 'components/theme_switcher.dart';
+import 'app_config.dart';
 import 'views/chat_list.dart';
 
-void main() {
+void main() async {
   SystemChrome.setSystemUIOverlayStyle(
       SystemUiOverlayStyle(statusBarColor: Colors.transparent));
   FlutterError.onError = (FlutterErrorDetails details) =>
@@ -27,49 +27,50 @@ void main() {
 }
 
 class App extends StatelessWidget {
-  final String platform = kIsWeb ? 'Web' : Platform.operatingSystem;
   @override
   Widget build(BuildContext context) {
     return Matrix(
-      clientName: 'FluffyChat $platform',
       child: Builder(
         builder: (BuildContext context) => ThemeSwitcherWidget(
           child: Builder(
-            builder: (BuildContext context) => MaterialApp(
-              title: 'FluffyChat',
-              theme: ThemeSwitcherWidget.of(context).themeData,
-              localizationsDelegates: L10n.localizationsDelegates,
-              supportedLocales: L10n.supportedLocales,
-              locale: kIsWeb
-                  ? Locale(html.window.navigator.language.split('-').first)
-                  : null,
-              home: FutureBuilder<LoginState>(
-                future:
-                    Matrix.of(context).client.onLoginStateChanged.stream.first,
-                builder: (context, snapshot) {
-                  if (snapshot.hasError) {
-                    WidgetsBinding.instance
-                        .addPostFrameCallback((_) => FlushbarHelper.createError(
-                              title: L10n.of(context).oopsSomethingWentWrong,
-                              message: snapshot.error.toString(),
-                            ).show(context));
-                    return HomeserverPicker();
-                  }
-                  if (!snapshot.hasData) {
-                    return Scaffold(
-                      body: Center(
-                        child: CircularProgressIndicator(),
-                      ),
-                    );
-                  }
-                  if (Matrix.of(context).client.isLogged()) {
-                    return ChatListView();
-                  }
-                  return HomeserverPicker();
-                },
-              ),
-            ),
-          ),
+              builder: (context) => MaterialApp(
+                    title: '${AppConfig.applicationName}',
+                    theme: ThemeSwitcherWidget.of(context).themeData,
+                    localizationsDelegates: L10n.localizationsDelegates,
+                    supportedLocales: L10n.supportedLocales,
+                    locale: kIsWeb
+                        ? Locale(
+                            html.window.navigator.language.split('-').first)
+                        : null,
+                    home: FutureBuilder<LoginState>(
+                      future: Matrix.of(context)
+                          .client
+                          .onLoginStateChanged
+                          .stream
+                          .first,
+                      builder: (context, snapshot) {
+                        if (snapshot.hasError) {
+                          WidgetsBinding.instance.addPostFrameCallback((_) =>
+                              FlushbarHelper.createError(
+                                title: L10n.of(context).oopsSomethingWentWrong,
+                                message: snapshot.error.toString(),
+                              ).show(context));
+                          return HomeserverPicker();
+                        }
+                        if (!snapshot.hasData) {
+                          return Scaffold(
+                            body: Center(
+                              child: CircularProgressIndicator(),
+                            ),
+                          );
+                        }
+                        if (Matrix.of(context).client.isLogged()) {
+                          return ChatListView();
+                        }
+                        return HomeserverPicker();
+                      },
+                    ),
+                  )),
         ),
       ),
     );
diff --git a/lib/utils/firebase_controller.dart b/lib/utils/firebase_controller.dart
index 9c779eb9..abcd6404 100644
--- a/lib/utils/firebase_controller.dart
+++ b/lib/utils/firebase_controller.dart
@@ -1,6 +1,7 @@
 import 'dart:convert';
 import 'dart:io';
 
+import 'package:fluffychat/app_config.dart';
 import 'package:fluffychat/utils/platform_infos.dart';
 import 'package:flushbar/flushbar_helper.dart';
 import 'package:famedlysdk/famedlysdk.dart';
@@ -25,12 +26,6 @@ abstract class FirebaseController {
   static final FlutterLocalNotificationsPlugin
       _flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
   static BuildContext context;
-  static const String CHANNEL_ID = 'fluffychat_push';
-  static const String CHANNEL_NAME = 'FluffyChat push channel';
-  static const String CHANNEL_DESCRIPTION = 'Push notifications for FluffyChat';
-  static const String APP_ID = 'chat.fluffy.fluffychat';
-  static const String GATEWAY_URL = 'https://janian.de:7023/';
-  static const String PUSHER_FORMAT = 'event_id_only';
 
   static Future<void> setupFirebase(
       MatrixState matrix, String clientName) async {
@@ -65,12 +60,14 @@ abstract class FirebaseController {
     final currentPushers = pushers.where((pusher) => pusher.pushkey == token);
     if (currentPushers.length == 1 &&
         currentPushers.first.kind == 'http' &&
-        currentPushers.first.appId == APP_ID &&
+        currentPushers.first.appId == AppConfig.pushNotificationsAppId &&
         currentPushers.first.appDisplayName == clientName &&
         currentPushers.first.deviceDisplayName == client.deviceName &&
         currentPushers.first.lang == 'en' &&
-        currentPushers.first.data.url.toString() == GATEWAY_URL &&
-        currentPushers.first.data.format == PUSHER_FORMAT) {
+        currentPushers.first.data.url.toString() ==
+            AppConfig.pushNotificationsGatewayUrl &&
+        currentPushers.first.data.format ==
+            AppConfig.pushNotificationsPusherFormat) {
       debugPrint('[Push] Pusher already set');
     } else {
       if (currentPushers.isNotEmpty) {
@@ -88,13 +85,13 @@ abstract class FirebaseController {
           .setPusher(
         Pusher(
           token,
-          APP_ID,
+          AppConfig.pushNotificationsAppId,
           clientName,
           client.deviceName,
           'en',
           PusherData(
-            url: Uri.parse(GATEWAY_URL),
-            format: PUSHER_FORMAT,
+            url: Uri.parse(AppConfig.pushNotificationsGatewayUrl),
+            format: AppConfig.pushNotificationsPusherFormat,
           ),
           kind: 'http',
         ),
@@ -255,7 +252,9 @@ abstract class FirebaseController {
 
       // Show notification
       var androidPlatformChannelSpecifics = AndroidNotificationDetails(
-          CHANNEL_ID, CHANNEL_NAME, CHANNEL_DESCRIPTION,
+          AppConfig.pushNotificationsChannelId,
+          AppConfig.pushNotificationsChannelName,
+          AppConfig.pushNotificationsChannelDescription,
           styleInformation: MessagingStyleInformation(
             person,
             conversationTitle: title,
@@ -328,8 +327,11 @@ abstract class FirebaseController {
 
       // Display notification
       var androidPlatformChannelSpecifics = AndroidNotificationDetails(
-          CHANNEL_ID, CHANNEL_NAME, CHANNEL_DESCRIPTION,
-          importance: Importance.max, priority: Priority.high);
+          AppConfig.pushNotificationsChannelId,
+          AppConfig.pushNotificationsChannelName,
+          AppConfig.pushNotificationsChannelDescription,
+          importance: Importance.max,
+          priority: Priority.high);
       var iOSPlatformChannelSpecifics = IOSNotificationDetails();
       var platformChannelSpecifics = NotificationDetails(
         android: androidPlatformChannelSpecifics,
diff --git a/lib/utils/sentry_controller.dart b/lib/utils/sentry_controller.dart
index 32f633a7..512bdcf9 100644
--- a/lib/utils/sentry_controller.dart
+++ b/lib/utils/sentry_controller.dart
@@ -1,6 +1,6 @@
 import 'package:adaptive_dialog/adaptive_dialog.dart';
 import 'package:flushbar/flushbar_helper.dart';
-import 'package:fluffychat/config/app_config.dart';
+import 'package:fluffychat/app_config.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
@@ -11,6 +11,7 @@ import '../config/setting_keys.dart';
 
 abstract class SentryController {
   static Future<void> toggleSentryAction(BuildContext context) async {
+    if (!AppConfig.enableSentry) return;
     final enableSentry = await showOkCancelAlertDialog(
           context: context,
           title: L10n.of(context).sendBugReports,
@@ -28,11 +29,12 @@ abstract class SentryController {
   }
 
   static Future<bool> getSentryStatus() async {
+    if (!AppConfig.enableSentry) return false;
     final storage = Store();
     return await storage.getItemBool(SettingKeys.sentry);
   }
 
-  static final sentry = SentryClient(dsn: AppConfig.sentryDsn);
+  static final sentry = SentryClient(dsn: AppConfig.sentryDns);
 
   static void captureException(error, stackTrace) async {
     debugPrint(error.toString());
diff --git a/lib/utils/url_launcher.dart b/lib/utils/url_launcher.dart
index 3875b12e..626f4354 100644
--- a/lib/utils/url_launcher.dart
+++ b/lib/utils/url_launcher.dart
@@ -2,7 +2,7 @@ import 'package:adaptive_dialog/adaptive_dialog.dart';
 import 'package:famedlysdk/famedlysdk.dart';
 import 'package:fluffychat/components/dialogs/simple_dialogs.dart';
 import 'package:fluffychat/components/matrix.dart';
-import 'package:fluffychat/config/app_config.dart';
+import 'package:fluffychat/app_config.dart';
 import 'package:fluffychat/utils/app_route.dart';
 import 'package:fluffychat/views/chat.dart';
 import 'package:flutter/material.dart';
@@ -15,7 +15,7 @@ class UrlLauncher {
   const UrlLauncher(this.context, this.url);
 
   void launchUrl() {
-    if (url.startsWith(AppConfig.matrixToLinkPrefix) ||
+    if (url.startsWith(AppConfig.inviteLinkPrefix) ||
         {'#', '@', '!', '+', '\$'}.contains(url[0])) {
       return openMatrixToUrl();
     }
@@ -24,7 +24,7 @@ class UrlLauncher {
 
   void openMatrixToUrl() async {
     final matrix = Matrix.of(context);
-    final identifier = url.replaceAll(AppConfig.matrixToLinkPrefix, '');
+    final identifier = url.replaceAll(AppConfig.inviteLinkPrefix, '');
     if (identifier[0] == '#' || identifier[0] == '!') {
       // sometimes we have identifiers which have an event id and additional query parameters
       // we want to separate those.
diff --git a/lib/views/chat.dart b/lib/views/chat.dart
index d737a89b..27fa6af4 100644
--- a/lib/views/chat.dart
+++ b/lib/views/chat.dart
@@ -33,7 +33,7 @@ import 'package:swipe_to_action/swipe_to_action.dart';
 
 import '../components/dialogs/send_file_dialog.dart';
 import '../components/input_bar.dart';
-import '../config/app_config.dart';
+import '../app_config.dart';
 import '../utils/matrix_file_extension.dart';
 import 'chat_details.dart';
 import 'chat_list.dart';
diff --git a/lib/views/chat_details.dart b/lib/views/chat_details.dart
index ecc0852c..e21ac9d0 100644
--- a/lib/views/chat_details.dart
+++ b/lib/views/chat_details.dart
@@ -1,5 +1,5 @@
 import 'package:adaptive_dialog/adaptive_dialog.dart';
-import 'package:fluffychat/config/app_config.dart';
+import 'package:fluffychat/app_config.dart';
 import 'package:fluffychat/utils/fluffy_share.dart';
 import 'package:fluffychat/views/chat_permissions_settings.dart';
 import 'package:flushbar/flushbar_helper.dart';
@@ -202,7 +202,7 @@ class _ChatDetailsState extends State<ChatDetails> {
                         IconButton(
                           icon: Icon(Icons.share_outlined),
                           onPressed: () => FluffyShare.share(
-                              AppConfig.matrixToLinkPrefix +
+                              AppConfig.inviteLinkPrefix +
                                   widget.room.canonicalAlias,
                               context),
                         ),
diff --git a/lib/views/chat_list.dart b/lib/views/chat_list.dart
index c90c80f2..a211db76 100644
--- a/lib/views/chat_list.dart
+++ b/lib/views/chat_list.dart
@@ -7,7 +7,7 @@ import 'package:fluffychat/components/connection_status_header.dart';
 import 'package:fluffychat/components/default_app_bar_search_field.dart';
 import 'package:fluffychat/components/default_drawer.dart';
 import 'package:fluffychat/components/dialogs/simple_dialogs.dart';
-import 'package:fluffychat/config/app_config.dart';
+import 'package:fluffychat/app_config.dart';
 import 'package:fluffychat/utils/platform_infos.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
@@ -105,7 +105,7 @@ class _ChatListState extends State<ChatList> {
     if (Navigator.of(context).canPop()) {
       Navigator.of(context).popUntil((r) => r.isFirst);
     }
-    if (text.startsWith(AppConfig.matrixToLinkPrefix)) {
+    if (text.startsWith(AppConfig.inviteLinkPrefix)) {
       UrlLauncher(context, text).openMatrixToUrl();
       return;
     }
diff --git a/lib/views/homeserver_picker.dart b/lib/views/homeserver_picker.dart
index 17bf565e..876e1d48 100644
--- a/lib/views/homeserver_picker.dart
+++ b/lib/views/homeserver_picker.dart
@@ -4,7 +4,7 @@ import 'package:adaptive_dialog/adaptive_dialog.dart';
 import 'package:famedlysdk/famedlysdk.dart';
 import 'package:fluffychat/components/dialogs/simple_dialogs.dart';
 import 'package:fluffychat/components/matrix.dart';
-import 'package:fluffychat/config/app_config.dart';
+import 'package:fluffychat/app_config.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
 import 'package:fluffychat/utils/app_route.dart';
 import 'package:fluffychat/utils/sentry_controller.dart';
@@ -12,6 +12,8 @@ import 'package:fluffychat/views/sign_up.dart';
 import 'package:flutter/material.dart';
 import 'package:url_launcher/url_launcher.dart';
 
+import 'login.dart';
+
 class HomeserverPicker extends StatelessWidget {
   Future<void> _setHomeserverAction(BuildContext context) async {
     const prefix = 'https://';
@@ -42,7 +44,8 @@ class HomeserverPicker extends StatelessWidget {
     final success = await SimpleDialogs(context).tryRequestWithLoadingDialog(
         checkHomeserver(homeserver, Matrix.of(context).client));
     if (success == true) {
-      await Navigator.of(context).push(AppRoute(SignUp()));
+      await Navigator.of(context)
+          .push(AppRoute(AppConfig.enableRegistration ? SignUp() : Login()));
     }
   }
 
@@ -61,35 +64,42 @@ class HomeserverPicker extends StatelessWidget {
                   max((MediaQuery.of(context).size.width - 600) / 2, 0)),
           child: Column(
             children: <Widget>[
-              Hero(
-                tag: 'loginBanner',
-                child: InkWell(
-                  onTap: () => showAboutDialog(
-                    context: context,
-                    children: [
-                      RaisedButton(
-                        child: Text(L10n.of(context).privacy),
-                        onPressed: () => launch(AppConfig.privacyUrl),
-                      )
-                    ],
-                    applicationIcon:
-                        Image.asset('assets/logo.png', width: 100, height: 100),
-                    applicationName: AppConfig.applicationName,
-                  ),
-                  child: Image.asset('assets/fluffychat-banner.png'),
+              Expanded(
+                child: ListView(
+                  children: [
+                    Hero(
+                      tag: 'loginBanner',
+                      child: InkWell(
+                        onTap: () => showAboutDialog(
+                          context: context,
+                          children: [
+                            RaisedButton(
+                              child: Text(L10n.of(context).privacy),
+                              onPressed: () => launch(AppConfig.privacyUrl),
+                            )
+                          ],
+                          applicationIcon: Image.asset('assets/logo.png',
+                              width: 100, height: 100),
+                          applicationName: AppConfig.applicationName,
+                        ),
+                        child: Image.asset('assets/banner.png'),
+                      ),
+                    ),
+                    Padding(
+                      padding: const EdgeInsets.all(16.0),
+                      child: Text(
+                        AppConfig.applicationWelcomeMessage ??
+                            L10n.of(context).welcomeText,
+                        textAlign: TextAlign.center,
+                        style: TextStyle(
+                          fontSize: 22,
+                        ),
+                      ),
+                    ),
+                  ],
                 ),
               ),
-              Padding(
-                padding: const EdgeInsets.all(16.0),
-                child: Text(
-                  L10n.of(context).welcomeText,
-                  textAlign: TextAlign.center,
-                  style: TextStyle(
-                    fontSize: 22,
-                  ),
-                ),
-              ),
-              Spacer(),
+              SizedBox(height: 16),
               Hero(
                 tag: 'loginButton',
                 child: Container(
@@ -123,16 +133,31 @@ class HomeserverPicker extends StatelessWidget {
                   ),
                 ),
               ),
-              FlatButton(
-                child: Text(
-                  L10n.of(context).changeTheHomeserver,
-                  style: TextStyle(
-                    decoration: TextDecoration.underline,
-                    color: Colors.blue,
-                    fontSize: 16,
+              Wrap(
+                children: [
+                  if (AppConfig.allowOtherHomeservers)
+                    FlatButton(
+                      child: Text(
+                        L10n.of(context).changeTheHomeserver,
+                        style: TextStyle(
+                          decoration: TextDecoration.underline,
+                          color: Theme.of(context).primaryColor,
+                          fontSize: 16,
+                        ),
+                      ),
+                      onPressed: () => _setHomeserverAction(context),
+                    ),
+                  FlatButton(
+                    child: Text(
+                      L10n.of(context).privacy,
+                      style: TextStyle(
+                        decoration: TextDecoration.underline,
+                        fontSize: 16,
+                      ),
+                    ),
+                    onPressed: () => launch(AppConfig.privacyUrl),
                   ),
-                ),
-                onPressed: () => _setHomeserverAction(context),
+                ],
               ),
               SizedBox(height: 16),
             ],
diff --git a/lib/views/login.dart b/lib/views/login.dart
index 664ddbb5..1fd23ec5 100644
--- a/lib/views/login.dart
+++ b/lib/views/login.dart
@@ -49,7 +49,7 @@ class _LoginState extends State<Login> {
       await matrix.client.login(
           user: usernameController.text,
           password: passwordController.text,
-          initialDeviceDisplayName: matrix.widget.clientName);
+          initialDeviceDisplayName: matrix.clientName);
     } on MatrixException catch (exception) {
       setState(() => passwordError = exception.errorMessage);
       return setState(() => loading = false);
@@ -59,7 +59,7 @@ class _LoginState extends State<Login> {
     }
     await FirebaseController.setupFirebase(
       matrix,
-      matrix.widget.clientName,
+      matrix.clientName,
     ).catchError(SentryController.captureException);
 
     setState(() => loading = false);
diff --git a/lib/views/settings.dart b/lib/views/settings.dart
index 67be51c0..492bdadd 100644
--- a/lib/views/settings.dart
+++ b/lib/views/settings.dart
@@ -7,7 +7,7 @@ import 'package:flushbar/flushbar_helper.dart';
 import 'package:famedlysdk/famedlysdk.dart';
 import 'package:file_picker_cross/file_picker_cross.dart';
 
-import 'package:fluffychat/config/app_config.dart';
+import 'package:fluffychat/app_config.dart';
 import 'package:fluffychat/utils/platform_infos.dart';
 import 'package:fluffychat/utils/sentry_controller.dart';
 import 'package:fluffychat/views/settings_devices.dart';
@@ -22,7 +22,7 @@ import '../components/content_banner.dart';
 import '../components/dialogs/simple_dialogs.dart';
 import '../components/matrix.dart';
 import '../utils/app_route.dart';
-import '../config/app_config.dart';
+import '../app_config.dart';
 import '../config/setting_keys.dart';
 import 'app_info.dart';
 import 'chat_list.dart';
@@ -141,8 +141,7 @@ class _SettingsState extends State<Settings> {
       title: L10n.of(context).editJitsiInstance,
       textFields: [
         DialogTextField(
-          initialText:
-              Matrix.of(context).jitsiInstance.replaceFirst(prefix, ''),
+          initialText: AppConfig.jitsiInstance.replaceFirst(prefix, ''),
           prefixText: prefix,
         ),
       ],
@@ -154,7 +153,7 @@ class _SettingsState extends State<Settings> {
     }
     final matrix = Matrix.of(context);
     await matrix.store.setItem(SettingKeys.jitsiInstance, jitsi);
-    matrix.jitsiInstance = jitsi;
+    AppConfig.jitsiInstance = jitsi;
   }
 
   void setDisplaynameAction(BuildContext context) async {
@@ -411,7 +410,7 @@ class _SettingsState extends State<Settings> {
             ListTile(
               trailing: Icon(Icons.phone_outlined),
               title: Text(L10n.of(context).editJitsiInstance),
-              subtitle: Text(Matrix.of(context).jitsiInstance),
+              subtitle: Text(AppConfig.jitsiInstance),
               onTap: () => setJitsiInstanceAction(context),
             ),
             ListTile(
diff --git a/lib/views/settings_notifications.dart b/lib/views/settings_notifications.dart
index 2c809e64..0d936aae 100644
--- a/lib/views/settings_notifications.dart
+++ b/lib/views/settings_notifications.dart
@@ -3,7 +3,7 @@ import 'dart:io';
 import 'package:famedlysdk/famedlysdk.dart';
 import 'package:fluffychat/components/adaptive_page_layout.dart';
 import 'package:fluffychat/components/dialogs/simple_dialogs.dart';
-import 'package:fluffychat/utils/firebase_controller.dart';
+import 'package:fluffychat/app_config.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
@@ -68,9 +68,9 @@ class SettingsNotifications extends StatelessWidget {
     await NotificationSetting.configureChannel(
       NotificationDetails(
         android: AndroidNotificationDetails(
-          FirebaseController.CHANNEL_ID,
-          FirebaseController.CHANNEL_NAME,
-          FirebaseController.CHANNEL_DESCRIPTION,
+          AppConfig.pushNotificationsChannelId,
+          AppConfig.pushNotificationsChannelName,
+          AppConfig.pushNotificationsChannelDescription,
         ),
       ),
     );
diff --git a/lib/views/sign_up.dart b/lib/views/sign_up.dart
index 6988293b..6637a0ab 100644
--- a/lib/views/sign_up.dart
+++ b/lib/views/sign_up.dart
@@ -90,7 +90,7 @@ class _SignUpState extends State<SignUp> {
           children: <Widget>[
             Hero(
               tag: 'loginBanner',
-              child: Image.asset('assets/fluffychat-banner.png'),
+              child: Image.asset('assets/banner.png'),
             ),
             ListTile(
               leading: CircleAvatar(
diff --git a/lib/views/sign_up_password.dart b/lib/views/sign_up_password.dart
index 10fa2cf1..d93a104b 100644
--- a/lib/views/sign_up_password.dart
+++ b/lib/views/sign_up_password.dart
@@ -44,7 +44,7 @@ class _SignUpPasswordState extends State<SignUpPassword> {
       await matrix.client.register(
         username: widget.username,
         password: passwordController.text,
-        initialDeviceDisplayName: matrix.widget.clientName,
+        initialDeviceDisplayName: matrix.clientName,
         auth: auth,
       );
       await waitForLogin;